Former Manchester City midfielder Michael Johnson revealed he previously attended the Priory Clinic due to mental-health problems, and has asked to be left in peace after his football career came to a premature end.

Johnson, 24, was released by City before Christmas but news of his departure only broke earlier this week after he was pictured at a takeaway, looking overweight.

The ex-Everton trainee, who debuted for City at 18 and was reportedly the subject of £10 million bids from Arsenal and Liverpool, had not represented the Premier League champions since 2009.

Described as "the new Colin Bell" on his emergence, Johnson also struggled with injuries and did not fulfil his considerable potential.

"I am more disappointed than anyone but that's the way it goes," he told the Manchester Evening News.

Johnson has had two convictions for drink-driving and admitted he has had mental-health problems, resulting in his admittance to the Priory.

"I have been attending the Priory Clinic for a number of years now with regard to my mental health and would be grateful if I could now be left alone to live the rest of my life," he said.

The former England Under-21 international's last spell of football came in an injury-hit loan stay at Leicester last season, where he made just nine appearances.